Aquarium hose hook
thingiverse
A hook to anchor your hose when you are cleaning / refilling the aquarium with water. Forgive me if someone else already did this - but I couldn't find any anyway. The included *.stl fits my hose snugly with a diameter of 17 mm. But I've included a Fusion360 file if you want to create your own version (for other diameters and lengths).
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